# Gauge KPI Sparkline
Learn how to implement Gauge KPI Sparkline formulas in your spreadsheets with Spread.NET
## Content
Spread for Winforms provides gauge KPI sparkline which can be used to visualize the performance of metrics with respect to KPI values. It can be used to indicate the effectiveness of management work or present sales targets etc.
Gauge KPI sparkline uses the following values to display metrics:
* Target Value: Indicates the expected value and displays it at the bottom.
* Current Value: Indicates the current value.
* Minimum Value: Indicates the smallest expected value. It should be lower than the target value and current value.
* Maximum Value: Indicates the biggest expected value. It should be higher than the target value and current value.
## Types of Gauge KPI Sparklines
There are three types of Gauge KPI sparklines, namely, Circle, Vertical, and Horizontal which can be set by using the **gaugeType** option in the GaugeKPISparkline function.
The gauge KPI sparkline formula has the following syntax:
`=GAUGEKPISPARKLINE (targetValue, currentValue, minValue, maxValue, [showLabel, targetValueLabel, currentValueLabel, minValueLabel, maxValueLabel, fontArray, minAngle, maxAngle, radiusRatio, gaugeType, colorRange])`
The formula options are described below:
| **Argument** | **Type** | **Description** |
| -------- | ---- | ----------- |
| targetValue | Number | The target value of the gauge KPI sparkline. The target value is between minValue and maxValue. |
| currentValue | Number | The current value of the gauge KPI sparkline. The current value is between minValue and maxValue. |
| minValue | Number | The minimum value of the gauge KPI sparkline. The minValue is less than maxValue. |
| maxValue | Number | The maximum value of the gauge KPI sparkline. The maxValue is more than minValue. |
| showLabel *Optional* | Boolean | Specifies whether to show the label of all the values provided in the sparkline. If false, it will not show labels. If true, it will only show the labels which fit inside the cell width and height. The cell should have enough width and height to show both graph and labels. The default value is true. |
| targetValueLabel *Optional* | String | The string to display as target value label. The default value is targetValue. |
| currentValueLabel *Optional* | String | The string to display as current value label. The default value is currentValue. |
| minValueLabel *Optional* | String | The string to display as minimum value label. The default value is minValue. |
| maxValueLabel *Optional* | String | The string to display as maximum value label. The default value is maxValue. |
| fontArray *Optional* | CalcArray | Array contains font format as string items for the four label types - \* Target value label: Default value "16px Calibri" \* Current value label: Default value "bold 22px Calibri" \* Minimum and Maximum value labels: Default value "12px Calibri" **showLabel** option must be true. |
| minAngle *Optional* | Number | The minimum angle value of circle type. The minAnigle should be less than maxAngle. The angle values correspond to the time in the clock. 0 is 12 o'clock, -90 is 9 o'clock, 90 is 3 o'clock, and -180/180 is 6 o'clock. The default value is -90. **gaugeType** option must be 0 (circle type). |
| maxAngle *Optional* | Number | The maximum angle value of circle type. The maxAngle should be bigger than minAngle. The angle values correspond to the time in the clock. 0 is 12 o'clock, -90 is 9 o'clock, 90 is 3 o'clock, and -180/180 is 6 o'clock. The default value is 90. **gaugeType** option must be 0 (circle type). |
| radiusRatio *Optional* | Number | The value is calculated as the ratio of inner circle radius and outer circle radius. The outer circle radius value is decided by the cell size. The value ranges between 0 and 1. Default is 0. **gaugeType** option must be 0 (circle type). |
| gaugeType *Optional* | Number | The KPI sparkline type. 0 - Circle
1 - Vertical Bar
2 - Horizontal Bar The default type is circle. |
| colorRange *Optional* **Repeatable** | CalcArray | The color range between specified values. *{startValue, endValue, color\_string}* Where *startValue* is the starting value in a range, *endValue* is the ending value in a range, and the *color\_string* is the color of the range between the two specified value. The *startValue* must be less than the *endValue* and both the values should be between minValue and maxValue. Default color range from minValue to maxValue is filled with light gray color. |
## Usage Scenario
Consider a scenario where a company wants to monitor its annual sales performance. A gauge KPI sparkline can be used to measure the revenue, profit, and sales metrics against their target and actual values. It helps to visualize the data efficiently and make meaningful deductions.
Gauge KPI Sparkline
```csharp
// get sheet
var worksheet1 = fpSpread1.Sheets[0].AsWorksheet();
var worksheet2 = fpSpread1.Sheets[1].AsWorksheet();
// set data
worksheet2.SetValue(0, 0, new object[,]
{
{"Parameters", "Target", "Current", "Min", "Max" },
{ "Revenue", 900, 1200, 0, 2000 },
{ "Profit", 1200, 1100, 0, 2000},
{"Sales", 1600, 1800, 0, 2000}
});
// set GaugeKPISparkline formula
worksheet1.Cells["A2"].Formula = "GAUGEKPISPARKLINE(Sheet2!B2,Sheet2!C2,Sheet2!D2,Sheet2!E2,TRUE,TEXT(Sheet2!B2/1000,\"$0.0K\"),Sheet2!A2,TEXT(Sheet2!D2/1000,\"$0.0K\"),TEXT(Sheet2!E2/1000,\"$0.0K\"),,-90,90,0.4,0,{0,1200,\"#FFB2BD\"},{1200,1500,\"#FFDFB0\"},{1500,2000,\"#BCEAB4\"})";
worksheet1.Cells["B2"].Formula = "GAUGEKPISPARKLINE(Sheet2!B3,Sheet2!C3,Sheet2!D3,Sheet2!E3,TRUE,TEXT(Sheet2!B3/1000,\"$0.0K\"),Sheet2!A3,TEXT(Sheet2!D3/1000,\"$0.0K\"),TEXT(Sheet2!E3/1000,\"$0.0K\"),,-90,90,0.4,0,{0,1200,\"#FFB2BD\"},{1200,1500,\"#FFDFB0\"},{1500,2000,\"#BCEAB4\"})";
worksheet1.Cells["C2"].Formula = "GAUGEKPISPARKLINE(Sheet2!B4,Sheet2!C4,Sheet2!D4,Sheet2!E4,TRUE,TEXT(Sheet2!B4/1000,\"$0.0K\"),Sheet2!A4,TEXT(Sheet2!D4/1000,\"$0.0K\"),TEXT(Sheet2!E4/1000,\"$0.0K\"),,-90,90,0.4,0,{0,1200,\"#FFB2BD\"},{1200,1500,\"#FFDFB0\"},{1500,2000,\"#BCEAB4\"})";
```
```vbnet
'Get sheet
Dim worksheet1 = FpSpread1.Sheets(0).AsWorksheet()
Dim worksheet2 = FpSpread1.Sheets(1).AsWorksheet()
'Set data
worksheet2.SetValue(0, 0, New Object(,) {
{"Parameters", "Target", "Current", "Min", "Max"},
{"Revenue", 900, 1200, 0, 2000},
{"Profit", 1200, 1100, 0, 2000},
{"Sales", 1600, 1800, 0, 2000}
})
'Set GaugeKPISparkline formula
worksheet1.Cells("A2").Formula = "GAUGEKPISPARKLINE(Sheet2!B2,Sheet2!C2,Sheet2!D2,Sheet2!E2,TRUE,TEXT(Sheet2!B2/1000,""$0.0K""),Sheet2!A2,TEXT(Sheet2!D2/1000,""$0.0K""),TEXT(Sheet2!E2/1000,""$0.0K""),,-90,90,0.4,0,{0,1200,""#FFB2BD""},{1200,1500,""#FFDFB0""},{1500,2000,""#BCEAB4""})"
worksheet1.Cells("B2").Formula = "GAUGEKPISPARKLINE(Sheet2!B3,Sheet2!C3,Sheet2!D3,Sheet2!E3,True,TEXT(Sheet2!B3/1000,""$0.0K""),Sheet2!A3,TEXT(Sheet2!D3/1000,""$0.0K""),TEXT(Sheet2!E3/1000,""$0.0K""),,-90,90,0.4,0,{0,1200,""#FFB2BD""},{1200,1500,""#FFDFB0""},{1500,2000,""#BCEAB4""})"
worksheet1.Cells("C2").Formula = "GAUGEKPISPARKLINE(Sheet2!B4,Sheet2!C4,Sheet2!D4,Sheet2!E4,True,TEXT(Sheet2!B4/1000,""$0.0K""),Sheet2!A4,TEXT(Sheet2!D4/1000,""$0.0K""),TEXT(Sheet2!E4/1000,""$0.0K""),,-90,90,0.4,0,{0,1200,""#FFB2BD""},{1200,1500,""#FFDFB0""},{1500,2000,""#BCEAB4""})"
```
## Using the Spread Designer
1. Type the different values in cells or a column or row of cells in the designer.
2. Select a cell for the sparkline.
3. Select the Insert menu.
4. Select a sparkline type.
5. Set the Values in the **Sparkline Setting** dialog.
Alternatively, set the values by selecting the cells in the worksheet using the pointer.
Set the additional sparkline settings as shown in the image above.
6. Select OK.
7. Select Apply and Exit from the File menu to save your changes and close the designer.